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Self-deformation multi-axial puncture device

A piercer, multi-axial technology, applied in the direction of sampling device, etc., can solve the problem of inability to turn, achieve the effect of reducing damage and increasing puncture efficiency

Inactive Publication Date: 2013-08-21
刘苗生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the existing puncture technology cannot turn, the present invention provides a self-deformable multi-axial puncture device. The technical solution adopted by the present invention to solve the technical problem is: according to the memory alloy can reach a specific transformation temperature with temperature changes Its shape can change. A self-deformable multi-axial puncture device made of memory alloy is designed. The puncture device is composed of a puncture needle sleeve and a corresponding arc-shaped puncture needle core. A segment of the cannula can be changed into an arc shape with the temperature change. According to the transformation temperature of the puncture needle cannula, it can be divided into two types: cold-heat deformation puncture device and heat-cold deformation puncture device.

Method used

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  • Self-deformation multi-axial puncture device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: as Figure 4 The working principle of the self-deformable multiaxial puncture device with cold-thermal deformation is shown in the upper right quadrant. (6) Put the tail end of the puncture needle sleeve in a straight line into the sleeve by elastic extrusion and puncture the target together, then fix the puncture needle sleeve, push the puncture needle core forward, and the opening slope at the front end of the needle core (7 ) can smoothly slide and pass through the side hole (2) of the casing along the arc-shaped inclined wall (3) at the front end of the casing. When the temperature of the self-deformable multi-axial puncture device gradually rises above the metamorphosis temperature, the puncture needle sleeve becomes an arc-shaped curved shape. The needle core (6) bends and advances toward the direction of the side hole of the puncture needle sleeve under the guidance of the arc-shaped puncture needle sleeve (5), realizing turning. The arc bending o...

Embodiment 2

[0017] Example 2: If there are other directions to be operated after completing the operation in the front and upper directions, you can inject cold water or cold air from the puncture device to cool the puncture device below the metamorphosis temperature, and the puncture needle sleeve becomes a straight tube shape, and then insert the The puncture needle core is drawn back into the side hole of the puncture needle sleeve, and the puncture needle sleeve is rotated to operate in another direction. as in Figure 5 Middle: Rotate the cannula of the puncture needle by 180° arc to operate in the forward and downward direction (lower right quadrant). In this way, the puncture needle cannula can be continuously rotated from 0° to 360°, so that the operation at any angle and any position in the three-dimensional direction can be realized.

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Abstract

The invention relates to a self-deformation multi-axial puncture device. The puncture device is prepared by shape memory alloy, and is composed of a puncture needle sleeve and a corresponding arc puncture needle core, wherein a part of the sleeve at a front section can be changed into an arc shape when a temperature reaches a transformation temperature. The front section of the puncture needle sleeve is in a shape of straight sleeve (1) outside a machine under a high or low temperature far different from a machine temperature, and then is changed to be arc-shaped (5) when the sleeve is in the machine for a while and a temperature of the sleeve is near the machine temperature. A front end of the puncture needle sleeve is provided with a side hole (2) opened towards an inner arc direction of the arc shape turned in a later stage. The puncture needle sleeve at a rear end of the side hole is a circular pipe. A needle point (4) towards axial front of the sleeve is provided at top of the sleeve and on a sleeve wall in front of the side hole. A sleeve wall opposite to the side hole of the puncture needle sleeve is in a mutually smooth connection with edges of the side hole, and forms an arc inclined plane (3) bending towards an opening direction in the puncture needle sleeve. A front end of the arc puncture needle core of the self-deformation multi-axial puncture device is provided with a inclined hole (7) opened towards an outer arc direction of the arc puncture needle core.

Description

technical field [0001] The invention relates to a self-deformable multi-axial puncture device composed of a deformable puncture needle sleeve and an arc-shaped puncture needle core made of shape memory alloy. The puncture device can realize arbitrary axial operation through a puncture channel, reducing damage, increase the puncture efficiency, and can be used for detection and sampling in objects. Background technique [0002] The current puncture technology is difficult to realize the steering of puncture. Once it deviates from the target, it needs to be re-punctured twice or even multiple times. The operation of multiple targets that are not in a straight line also requires multiple punctures, which increases damage and wastes time. Contents of the invention [0003] In order to overcome the problem that the existing puncture technology cannot turn, the present invention provides a self-deformable multi-axial puncture device. The technical solution adopted by the present...

Claims

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Application Information

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IPC IPC(8): G01N1/02
Inventor 刘苗生王崇宇刘泰华
Owner 刘苗生
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